Extension for scraper bowls



March 13, 1928. 1,662,732

J. ADAMS ET AL EXTENSION FOR SCRAPER BowLs Filed March 25, 1927 ATTORNEY y WITNESS:

Patented Mar. i3, 192.8.

UNITED STATES' JOHN ADAMS AND WILLIAM-H. ADAMS, OF BURLINGTON, NEW JERSEY.

EXTENSION FOR SCRAPER BOWLS.

Application led March 26, 1927.

The present inventionv relates to an improved extension for scraper bowls, particularly for that kind of bowl set forth, illustrated and claimed in patent dated March 16, 1926, Patent No. 1,577,152.

In this identifiedy patent, the ends of the bowls are of relatively small segment shape, and the rear curved wall of the bowl is relatively short. This construction allows the dirt to waste at the ends of the bowl, as well as over the upper rear edge of the rear portion of the bowl, and to avoid this it is necessary for the operator to very frequently dump the bowl in order to accomplish a thorough job of scraping the field or roadbed.

The present invention is to provide a bowl for a scraper hitch having circular ends which are-flangedv the greater part of their free edges and thereby preventing the waste of the dirt at the ends of the bowl, enabling the operator to avoid too frequently dumping the bowl. The fact is the circular ends act to prevent the dirt from overflowing the ends of the bowl aroundthe pivots.

Furthermore, the circular ends insure greater strength for the bowl, and though there is a greater quantity of metal in the circular ends than in the segmentk ends as in the above identified patent, it is considered 0 more economical to construct the circular ends than the segment ends, the reason being that the circular ends may be cast or other wise formed more economically than cutting out the segment ends as in said patent. Furthermore., there are methods already in use for making circular ends, whereas the segment ends require special casting devices or dies. Furthermore, the segment end as in the identified patent requires necessary bracing as disclosed in such patent, whereas the complete circular ends with their flanged portions act to reinforce themselves as well as reinforcing the entire bowl.

Another purpose of the invention is to provide an extension for a bowl of 'a scraper hitch, which is easily removable, and particularly and better adapted for a dumping bowl, permitting a greater quantity 0f dirt to collect in the bowl before it is'necessaryv to dump, and thereby preventing overflowing of the dirt at the rear ofthe bowl. Still another purpose is the provision of an improved scraper hitch bowl, wherein the adjacent edges of the rear wall of the bowl and the extension are anged, said flanges Serial No. 178,696.

extending inwardly of the bowl, and act as an abutment such as lwill prevent the dirty from crowding toward the upper edge. of the extension, when the bowl is loaded, and furthermore the circular ends avoid the use of flatV runners,. such runners preventing scraper from easily loading.

A. further purpose is to provide a bowl with the above advantages over said herein.

named disadvantages, and which is capable. of carrying an extremely large load for quite a distance before it is necessary to dump, avoiding waste, that is reducing the waste to a minimum, it being particularly pointed out that the extension though detachable from the bowl, prevents the dirt from flowing over the back. It is to be understood that the extension is especially adapted when scraping fields of substantial area, so that considerable quantity of dirt may collect in the bowl, the'bowly acting to'eollect as much. if not more dirt than a relatively large bowl..

A further purpose is to vprovide anextension for a scraper hitch bowl, `which insuresgreater strenght `and pressure for the backN ofthe bowl, relative to the` circular ends or.

discs, and when the bowl'turnstoward dumping position, the extension and the back ofthe bowl assuming a position at` the topv andy forwardly of the bowl, tends to auto-` matically lift the cutting edge of the forward blade of the bowl, it being possible to use this type of scraper in light or heavy soil to agreater advantage thanmay be accom= plished by the bowl in the above identified patent,

It'is to be understood that the-particulars herein given are in no way limitive,and ythat while still keeping within vthe scope ofthe invention, any desired modification-ofdetails and proportions may be made in the construction of the appliance according to eireumstances.

The invention comprises further features and combination of parts to be hereinafter set forth,y shown inA theV drawings and claimed;

` In the drawings:

Figure 1 is a plan view of a portion ofa scraper hitch, showingv the improved bowl as applied, also illustrating the extension.

Figure 2 is an-end elevationof the bowl showing the extension, the extension being illustrated in a slightly lifted position.

Figure 3 is a sectional view online 3-3 of Figure 1, showing the extension in its lowered normal position.

Figure 4 is a detail perspective view of the extension detached from the bowl.

Figure 5 is a sectional view on line 5--5 of Figure 3.

Referring to the drawings-1 identifies a scraper hitch having a bowl 2. This bowl comprises end disc-s 3, which` are mounted upon suitable pivot bolts 4, which are carried by the frame 5 of the scraper hitch.

Adjacent the greater portion of the marginal edgesof the discs are angle pieces 6, which constitute flanges, to which the lower wall and the rear wall 8 of the bowl are secured in any convenient or approved way, for example by rivets. The bottom of the bowl extends forward and merges into a scraper blade 9 provided with a cutting edge 10, acting to scrape the surface of the field or roadbed, and causing the dirt to fill the interior of the bowl adjacent the back 8. The upper edge of the back 8 terminates at a point even with a line extending horizontally through the pivots of the bowl, and as repeated at 11 the angle strip 12, which extends inwardly of the bowl and forms a flange.

Secured to the upper and forward portions of the flanges at the top and forward parts of the bowl are semi-annular strips or plates 13, which tend to reinforce the flanges of the end discs, and the forward lower portions of the strips 13 are deflected or bent forwardly as shown at 14. i The other ends 15 of the strips or plates 13 constitute abutinents for the Yextension 16.

This extension is in the form of a segment y plate, curved in cross-section to conform to the curvature of the end discs, and engage with the upper rear portions of the flanges 6, that is eXteriorly thereof, and is capable ofadjust-ing sliding movement between the flange 12 and the abutments 15. The lower v y edge of the extension 16 has an angle strip 17 secured thereto as by means of rivets or the like 18, the angle strip extending inwardly relatively the same distance as the flange 12 and is adapted to abut the flange 12 when the extension is lowered, as in Figure 3, thereby providing an inwardly extending flange, which tends to prevent the dirt and the like from riding too far upwardly and rearwardly as the bowl fills.

Pivoted at 185L on the inner face of the extension 16 near its ends are clasps or fasteners 19, which have offset bends 20, so as to cause the greater or hand engaging portions of the fasteners 19 to be spaced from the inner face of the extension. so that they may ride over and engage with the flanges 6 of the end discs of the bowl, to hold the extension securely in place. It is possible to move these fasteners sufficient-ly to permit the extension to be easily removed from the bowl. This particular use of the bowl for scraper hitches is more especially resorted to when the bowl is adapted for use in connection with a scraper head on fields or spaces of roadways of relatively small area, and especially when the bowl is not to be filled to any great extent.

lVhen the extension is in the lowered position, as in Figure 3, it is possible that the bowl may fill to a substantial height, the extension preventing' an overflow, and thereby allowing a greater quantity of dirt to collect in the` bowl than without an extension. It is possible to adjust the extension in the position shown in Figure 2, so as to permit of a. slight overflow of the dirt between the extension and upper rear edge of the rear wall of the bowl, allowing such overflow of dirt to break up in relatively small particles, and thereby evenly distribute on the surface being scraped at the rear of the bowl. Furthermore, due to the fact that the bowl has a substantial forwardly extending scraper blade with a. cutting4 edge, the bowl may more readily dump, when the bowl is released, due to the fact of the cutting edge of the blade 9 digging into the surface being scraped and causing the bowl to turn on-its pivots.

The invention having been set forth, what is claimed is:

1. An extension for a scraper hitch bowl comprising in combination with a bowl having' end discs provided with a rear wall and flanges on the end discs, an extension plate curved in cross-section to conform to the flanges of the end discs, and pivoted fasteners on the ends of the extension to be moved in position to overlie the flanges of' the discs and retain the extension in position.

2. In a bowl for a scraper hitch, the combination with end discs, with a bottom and rear wall, the bottom merging into a scraper blade and cutting edge, said end discs having flanges, of an extension consisting of a plate curved in cross-section corresponding to and engaging said flanges and resting upon the upper edge of the rear wall of the bowl,`the ends of the extension having fasteners to overlie the flanges of the end discs to secure the extension in position. y

3. In a bowl for a scraper hitch, the combination with end discs, with a bottom and rear wall, the bottom merging into a scraper blade and cutting edge, said end discs having flanges, of an extension consisting of a plate curved in cross-section corresponding to and engaging said flanges and resting upon the upper edge of the rear wall of the bowl, the ends of the extension having pivoted fasteners to overlie the flanges of the end discs to secure the extension in position, the end discs having abutinents to limit the upward movement of the extension, while the adjacent edges of the extension and the llo rear wall of the, bowl are adapted tol abut to limit the extension in its lowering movement.

4. A scraper hitch bowl comprising a bottom having a scraper blade and a rear curved wall, end discs to which the rear curved wall and bottom are secured, the end discs having flanges, an extension resting upon the upper edge of the rear wall and lying against the flanges of the discs, said discs adjacent their 'upper rear portions having abutments on the flanges to limit the extension in its upper forward movement, and fasteners on the inner face of the extension to overlie the flanges to hold the extension in position.

5. A bowl for a scraper hitch comprising end discs having marginal flanges the greater portion of their edges, bottom and rear walls secured to said flanges, the upper and slightly rear portions of the flanges having abutments, an extension of curvature corresponding to the curvature of the flanges and engaging therewith, the extension being limited in its upward movement by the abutments, while the upper rear edge of the rear wall limits the extension in its upward movement, the adjacent edges of the extension and the upper edge of the rear wall having inwardly extending flanges tending toward preventing the dirt and the like from crowding upwardly at the rear of the bowl, and pivoted fasteners carried by the inner face of the extension and overlying the flanges of the end discs to secure the extension in place.

In testimony whereof they affix their signatures hereto.

JOHN ADAMS. WrILLIAM H. ADAMS. 

